The best known and most widespread effects of iron-deficiency anemia are its impacts on:

People with not a enough iron their body. Some of the many effects are, decreased oxygen delivery to the entire body which may also include: Being pale or having yellow "sallow" skin. Unexplained fatigue or lack of energy. Shortness of breath or chest pain, especially with activity. Unexplained generalized weakness. Rapid heartbeat.

The light is great source of energy